<template>
  <div class="todo-footer">
    <label>
      <input
        type="checkbox"
        v-bind:checked="doneTotal === allTotal"
        @click="allCheck($event.target.checked)"
      />
    </label>
    <span>
      <span>已完成{{ doneTotal }}</span> / 全部{{ allTotal }}
    </span>
    <button class="btn btn-danger">清除已完成任务</button>
  </div>
</template>

<script>
export default {
  props: ['todos', 'allCheck'],
  computed: {
    // 任务总数
    allTotal() {
      return this.todos.length
    },
    // 完成任务数
    doneTotal() {
      return this.todos.filter((item) => item.isDone).length
    },
  },

  methods: {
    // handle(e) {
    //   // 获取全选框的目标值
    //   const target = e.target.checked
    //   // 将目标值传递给App组件
    //   this.allCheck(target)
    // },
  },
}
</script>

<style>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>
